Opthalmic mounting.



W. E. NICDONELL.

OPHTHALIVIIC MOUNTING.

APILICATION FILED DEC.6. |917.

LQMAlu. 'Patented Apr. 30, 1918.

2 SHEETS-SHEET I.

W. E. MCDONELL.

OPHTHALMIC MOUNTING.

APPLICATION FILED 050.6. I9I7.

l 205494 1L .Patented Apr. 30, 1918.

2 SHEETS-SHEET 2.

FEED?. FUE..

earns aren nien WILLIAM E. MQDONELL, 0F ROCHESTER, NEW YORK, ASSIGNOR'IG E. KIRSTEIN SONS COMPANY, 0F ROCHESTER, NEW YORK, A CORPORATION 0FNEW YORK.

OPIITHALMIC MOUNTING.

Specification of Letters Patent.

Patented Apr. 30, 191%.

Application led December 6, 1917. Serial No. 205,860.

To all whom t may concern:

Be it known that I, WILLIAM E. McDonnLL, a citizen of the United States,and resident of Rochester, in the county of MonroeY and State of NewYork, have invented certain new and useful Improvements in OphthalmicMountings, of which the following is a specification.

The present invention relates to ophthalmic mountings and moreparticularly to the type shown in the patent to William It. Uhlemann,#1,036,036, granted August 20, 1912, in which there is provided asupport for holding the lenses in properly spaced relation, and carryingnose guards which engage the nose under the action of springs, the noseguards and the springs being held detachably on the support by pivotedlatches or keepers. An object of this invention is to provide aconstruction in which the latches are mounted to turn about axescoincident with the turning axis of 'the pivot pins of the guard guards,so that the utilized for supporting levers may also be the latches. tionis to provide latch-held guards in which the springs for'positioning theguards also act on the latches to hold the latter in latching position.A still further object of the invention is to form the pivot pins whichprovide the connection between the guards and the supports with twoseparated bearing surfaces, one for a guard lever and the other for alatch, these surfaces being either upon the same side of the support oron opposite sides with one above and the other below suoli support.

' To these and other ends the invention consists of certain parts andcombinations of parts all of which will be hereinafter described, thenovel features being pointed out in the appended claims.

In the drawings Figure 1 is an enlarged plan view of a portion of oneembodiment of the ophthalmic mounting in plan;

Fig. 2 is a vertical section through the mounting shown in Fig. 1;

Fig. 3 is a view, partirlly in side elevation and partially in section,of the embodiment shown in Fig. 1;

v Fig. 4 is a perspective view of the latch employed in Fig. 1; Y f

Another object of the inven-V through a mounting in which the latch isarranged on the under side of the support,

while the guard is mounted on the upper side;

Fig. 8 is a transverse sectional view through the mounting in which theguard and the latch are mounted on the same side of the support, but arecess is provided in the upper surface of the support for` housing thelatch;

Fig. 9 is a sectional view in the plane of the lenses, showing a dierentforni of guard lever;

Fig. 10 is a view, partially in elevation and partially in sectiontransverse to the plane of the lenses, of the embodiment illustrated inFig. 9;

Fig. 11 is a sectional view in the plane of the lenses, showing a latchwhich is mounted on the pivot pin below the guard lever and has abendable portion lying above the pivot pin to prevent the removal of theguard lever;

Fig. 12 is a view of a construction similar to that shown in Figs. 9 and10, in which the form of the guardlever and the pivot pin are slightlymodified; and

Fig. 13 is a sectional view transversely of the lenses of an embodimentin which the guard lever is bendable into engagement with the latch.

Referring iirst to the embodiment shown in Figs. 1 to 4, A indicateslenses of which there are two, as usual, connected by a suitablesupport. This support, in this instance, comprises a bridging portion 1and lens attachingdevices 2 connected to the bridging portion byhorizontal portions or tables 3.

These tables are, in this instance, perfo rated, and have pivot pinspassed therethrough. In this embodiment, these pivot pins have portionslpassing through the perforations of the tables with their lower endsspun or upset as at 5. Above the support the pivot pinsliave twobearings 6 and 7, in this instance separated by anannular Harige 8, thebearing 7 being larger than the portion 4t of the pivot pin in orderthat a shoulder may be support.

On the bearing 6 which is uppermost the guard is mounted to turn. Inthis instance the guard is in the form of a sheet metal lever extendingtransversely of the lenses and having a linger piece portion 9 in frontof the lenses, while the nose bearing portion, not shown, is arranged onsaid lever in rear of the lenses. Preferably-the guard lever has anupwarally-extending tubular portion 10, surrounding the bearing portion6 and having an annular rib 11 at its upper end. About the tubularportion 10 a helical or other coil spring 12 is arranged, one end 13 ofthis spring engaging the support for the lenses, while the other end ispreferably engaged by the latch which retains the guard lever incooperative relation with its bearing 6.

The latch, in this instance, turns on the bearing 7 beneath the flange8, so as to be coniined between said flange and the top of the table 3.This latch has two arms, one extending forwardly at 141-, while theother extends rearwardly at 15, the bearing 1G being provided betweensaid arms. The rear arm 15, in this instance, extends upwardly at 17into the plane of the guard lever, and then extends horizontally at 18to overhang the guard lever. From this overhanging portion a portion 19is bent horizontally by a return bend 2O to provide a recess in whichthe end 21 of the spring 12 is received, so that such spring tends tohold the overhanging portion 18 over the lever, and in this mannerprevents the removal of the lever from its bearing 6. To prev-entaccidental movement between the latch and the guard lever, the latchalso has a portion 22 extended upwardly into the plane of the guardlever, and from this portion 22 a portion 23 is extended horizontallyabove the guard lever. Upon the under side of the portion 23 a boss 24is formed by depressing the upper portion of the portion 23, and thisboss is received within a depressed portion 25 in the upper surface ofthe guard lever infront of the pivot of the latter.

To remove the guard lever the spring 21 is disengaged with the latch,and the boss Q4 is moved out of the notch 25, so that the latch can beturned relatively to the guard lever in order to bring the overhangingportions of the latch from positions above the guard lever, after whichthe guard lever may be removed in the direction of its turning axis,this being due to the fact that the pivot pin on which the guard leverturns is headless. lith the removal of the guard lever the spring 12 isdetached.

In the embodiment shown in Figs. 5 and 6, the parts are the same exceptthat the latch is locked to the guard lever by a different provided toengage the tion 10. The portion 21C form of securing means. The forwardarm 14 has a portion 222* bent upwardly therefrom on that side oppositethe side shown in Fig. el, and the portion 23 is extended above theguard lever and is bendable with l he portion 22 to the plane of thelatch. as shown in Fig. G, so that the latch may be turned relatively tothe guard lever.

In the embodiment shown in F ig. 7, the table 3 of the support for thelenses has a screw threaded opening which is engaged by a screw threadedportion 4J) on the pivot pin, the pivot pin, in this instance. having abearing portion 6b above the support lor the guard lever, and a bearingportion 7b below the support for the latch. lhe bearing portion 7b islarger in diameter than the screw portion 4b and forms a shoulder forabutting the under side ot the support 3, and the lower end of the pivotpin is enlarged at 5b to act as a support for the latch. The guard leverhas substantially the saine torni as that shown in Fig. 1, but turns indirect engagement with the upper face of the support, being surroundedby a spring 12 which enga-ges at one end with the support and at theother end with the latch. The latch turns on the bearing portion 7"beneath the support and has but one arm 15 which is .provided with anupward or vertical extension 17b in rear of the support. said extensionhaving a portion 1S overhanging the guard lever to retain the latter onthe support. The return portion 19 is also provided to torni a recess inwhich the end 21 ot the spring is anchored. ln this construction nomeans other than that ot the spring is provided for holding the latchwith its overhanging portion above `the guard lever.

ln the embodiment shown in Fig. S, the pivot pin el is passed throughthe support 3C and has its lower endv upset at 5C on the under side ofthe support. rllhe. top surface of the support is provided with adepressed portion or recess 2G which opens at the rear of the support 3and has the latch mounted therein and turning upon a bearing portion 7C,which is separated from the bearing` portion 6C by a tapered annularshoulder Se. The guard lever has a tubular portion l0 turning on thebearing portion (Se and also on the tapered annular shoulder S, so thatit lies close to the latch. The latch hasI but one arm 15c which isextended rearwardly and is provided with a portion 17C extendingupwardly into the plane of the guard lever in rear of the pivot, theupwardly extending portion carrying the ovcrhanging portion 18C, and thereturn portion 19C iorining a notch for the portion 21 of the coilspring 1Q, which surrounds the tubular porof the coil spring' beyond theportion 21 is bent into engagement with the guard lever to hold thelatch to the guard lever. JAccording to this enibodiment, the latch isnot visible in the front of the mounting, and while the bearing portionsbetween the two leversare separated, the two levers are brought closetogether.

In the embodiment shown in Figs. 9 and 10, the pivot pin is formed as inthe embodiment shown in Fig. 7 with the bearing Vportion 6d above thesupport, a screw threaded portion 4d engaging the support, and a bearingportion 7d below the support. A head 5d on the lower end of the pivotpin supports the latch, while the guard lever is supported on thebearing portion 6d. The guard lever, instead of being provided with atubular portion, has a portion extended vertically with referencethereto at 27, and then turned inwardly at 28 to provide a bearing, theguard lever itself having a bearing 29 below the bearing 28. The coilspring l2 is arranged between the two bearing portions and has one endengaging the support at 13, while the other end 21 engages in the notchformed by the return portion 191 on the overhanging portion 13d which isformed at the upper end of a portion 17d extended upwardly from the arm15d of the latch. The latch also, in this instance, has aforwardlyextending arm 14 which is provided with an upwardly-extendingportion 22d carrying a portion 23d extended above the guard lever andacting to prevent relative movement between the latch and the guardlever in the same manner as the embodiment shown in Figs. 5 and 6.

In the embodiment shown in Fig. 1l, the pivot pin is constructed in thesame manner as in the embodiment shown in Fig. 2. The guard lever has, atubular portion 10, which is not provided with a surrounding bead orflange at its upper end. This embodiment differs from Fig. 2 in havingthe latch formed with a vertical portion 31 to one side of the lever,said vertical portion having at its upper end a horizontal portion 32,which overlies the upper end of the tubular portion 10 and the upper endof the pivot pin, so as 'to retain the guard lever on the pivot pin. Theportion 32 may be bent, as shown in dotted lines, so as to permit theguard lever' and the spring to be removed., the spring having one endengaging the support and the other end connected to the guard lever.

In the embodiment shown in Fig. l2, the

pivot pin has a screw threaded portion 4e.

engaging the support 3e, and also has a bear- .ig portion 6e above thesupport and a bearing portion 7 e below the support. The bearing portion7@ is larger than the screwthreaded portion le so as to form a shoulderfor engagement with the under side of the support, and on this bearingportion 7e the latch, which is formed in the same manner as that shownin Fig. 10, is mounted to turn,

the lower end of the pivot pin beingenlarged at 5e to support the latch.Above the bearing portion 6e the pivot pin isprovidedY with an annularrecess or groove 30 in which the spring 12 is received, one end of thespring engaging the support and the other end 'engaging the latch in thesame manner as in the other embodiments. The spring in this instanceshould be removed before the lever is removed.

In the embodiment shown in Fig. 13, the pivot pin is formed in the samemanner as that shown in Fig. 2. The guard lever is also formed in thesame manner and the mounting of the spring is the same. The latch hasits rear arm formed lilre the rear arm of the latch of Fig. Q, but theconnection between the forward arm and the guard lever is different. Theguard lever has an opening 33 in the portion thereof bent downwardly infront of the support 3, and in this opening a inger 34k on the forwardend of the latch is projected. Disengagement between the finger 34k andthe guard lever is effected by bending the guard lever to carry theopening 33 away from the `projecting linger 34, as shown in dottedlines.

From the foregoing itwill be seen that the pivot pin for the guard leveris also utilized for supporting a latch which holds the guard lever inplace. The coaxial. moiuiting of the latch and the guard lever alsopermits the guard-spring to be utilized for holding the latch iulatching position. The arrangement of the latch on Vthepivot pin makesthelatch inconspicuous and also reduces the cost of manufacture of themounting. Owing to the fact that the portionV of the pivot Ypin on whichthe guard lever turns is, in most of the embodiments, headless at itsfree end, the guard lever and the spring may be simultaneously removed.

It will be noted that the pivot pin has two bearings and two shoulders.The two shoulders are arranged on opposite sides of one of the bearingsand one of the shoulders abuts the support for the lenses. The latchoperates on the bearing between one shoulder and the support to beconlined between these parts while the-guard lever turns on the otherbearing.

l/Vhat I claim as my invention and desire to secure by Letters Patent isl. An ophthalmic mounting comprising a support for the lenses, a guardlever detachably and pivotally mounted thereon, and a latch for securingthe guard lever in place mounted to move with the guard lever.

c 2. An ophthalmic mounting comprising a support for the lenses, a noseguard, a pivot pm rigidly supported by one of said parts and formed witha headless bearing turning in the other part to permit the guard to beremoved in the direction of the axis of said pin, a spring mounted onthe guard lever Ifio abeut'the* pivot pin,l anda latch vmounted to turn:about an -axiscoincident with the turning axis of thev guard lever andto lock the guard lever against removal from the support for the lenses;

3. An ophthalmic mounting comprising a support for thelenses, a noseguard pivotally mounted on the support, a latch for holding saidguard onthe support, and aspring for positioning the guard, acting on the latchto hold it in locking position.

4. An ophthalmiomounting. comprising a support for the lenses, a noseguard pivotallymounted thereon, a latch for holding the nose guard onthe support said latch being mounted to swing about the axis of turningof the guard lever, and to engage said lever to one side of the axis,and a coil spring having its axis coincident with the axis of the guardlever and having one end engaging lthe support and the other endengaging the latch.

5. An ophthalmic mounting comprising a support'V for the lenses,l apivot pin rigidly secured to the support and having two separatedbearings thereon, a nose guard turning on one of said bearings, and alatch turning on the other bearing and adapted to hold the guard on thebearing of the latter.

6. An'ophthalmie mounting comprising a support for the lenses, a guardlever detachably and pivotally mounted thereon, and a pivoted keepermounted to swing with and also relatively to the guard lever about theaxis of turning of said lever.

7 An ophthalmic:mounting comprising a support for the lenses, a guard, apivot pin secured againstV turning in one of said parts and having abearing in the other part, and a latch forv securing the pivot pin inthe bearing,- saidflatch being held by said pivot pin.

8. An ophthalmic mounting comprising a support for the lenses, a pivotpin rigidly secured-to said support and having two bearings thereon anda lshoulder between the bearings, a guard lever mounted above theshoulder on one of the bearings, and a pivoted latch mounted below theshoulder on the other bearing and engaging the guard lever to hold thelatter on the bearing above the shoulder.

9. An ophthalmic mounting comprising a support, a pivot pin passingthrough the support land having two shoulders and two bearings, the twoshoulders being situated on opposite sides of one of the bearings andone of them engaging the support, a latch arranged on the bearingbetween the two shoulders to be confined between the support and theother shoulder, and a nose guard a r ranged on the other bearing andheld thereon by the latch.

10. An ophthalmic mounting comprising a support for the lenses, a guardlever dctachably and pivotally mounted thereon, a latch for securing theguard in place, pivotally mounted on the support to turn about the axisof turningof the guard.

ll. An ophthalmic mounting cou'iprising a support for the lenses, aguard detachably and pivotally mounted thereon, a latch for securing theguard in place, pivotally mounted on the support to turn about the axiso t turning of the guard, and means for causing the latch to swing withthe guard.

l2. An ophthahnie mounting' comprising a support for the lenses, a guarddetachably and pivotally mounted thereon, a latch for securing the guardin place pivota-lly mounted on the support, to turn about the axis oiturning of the lguard and having a foiwvardly and a rearwardlyextendingarm, one oi which overhangs the guard to hold the latter to thesupport, and the other of which interlocks with the guard to cause thelatch to turn with the guard.

13. An ophthalmic mounting comprising a support for the lenses, n, guarddetachably and pivotally mounted thereon, and a latch for securing theguard in place pivolally mounted on the support to turn about the axisof turning of the guard and having a, forwardly and arearwardly-extending arm both of which overhang the lguard to hold thelatter to the support.

14. An ophthalmic mounting comprising a support for the lenses, a guarddetachably and pivotally mounted thereon, a latch for securing the guardin place pivotally mounted on the support to turn about the axis oiturning of the guard and having a forwardly and a rearwardlyextending`arm. one ol which connects with the guard to hold the latter to thesupport, and a spring lor the guard engaging the other arm.

15. An ophthalmic mounting comprising a support for the lenses, a guarddetachably and pivotally mounted thereon, and a. latch for securing theguard in place pivotally mounted on the support to turn about the axisof turning of the guard, and having au arm overhanging the guard to holdthe latter to the support.

WILLIAM E. MGDONELL.

Coplesf'flthiapatentzmayfbe-obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington; D. C.

